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Polar's new A370 premium fitness tracker targets Fitbit's Charge 2

Adding continuous tracking heart-rate monitoring to its list of features, the A370 is a modest upgrade over the earlier A360.

David Carnoy Executive Editor / Reviews
Executive Editor David Carnoy has been a leading member of CNET's Reviews team since 2000. He covers the gamut of gadgets and is a notable reviewer of mobile accessories and portable audio products, including headphones and speakers. He's also an e-reader and e-publishing expert as well as the author of the novels Knife Music, The Big Exit and Lucidity. All the titles are available as Kindle, iBooks, Nook e-books and audiobooks.
Expertise Mobile accessories and portable audio, including headphones, earbuds and speakers Credentials
  • Maggie Award for Best Regularly Featured Web Column/Consumer
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Polar's A370 ships in June.

 Polar

Polar's new A370 premium fitness tracker has some small but important feature upgrades over the A360: It adds 24/7 continuous wrist-based heart-rate tracking and the company's Polar Sleep Plus analytics.

The price for the A370 is the same as the A360 -- $179 or £170 -- and ships in June with preorders starting now.

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Like the A360, the A370 is waterproof and has a glass lens color touch display, as well as vibrating notifications. The interchangeable band comes in a variety of color options.

Here are the A370's key specs. We'll have a full review in the coming weeks.

  • Weight: 31.7 grams (1.1 ounces)
  • Wristband thickness: 13.5 mm
  • Wristband width: 23.5 mm
  • Wristband size: S, M/L
  • Waterproof (WR30)
  • Wide-viewing angle full color TFT display with capacitive touchscreen
  • Screen resolution 80x160 pixels
  • Screen size 13x27mm
  • Polar proprietary optical heart rate module (2 green LEDs, 1 photodiode, analog front-end)
  • Rechargeable 110 mAh battery
  • Battery life up to 3 days with 24/7 activity tracking, including 1 hour of training per day (without smart notifications in use) with continuous